curiosity: moo sounds

Curiosity got the better of me and I want to know why the sounds of cows in the folder sounds weapons?That was before some piece weapon or is it I accidentally downloaded?
Counter-Strike 2D\sfx\weapons(moo1.wav and moo2.wav)
Sorry for such a question

Those are actually special virus files that were hidden among ordinary files so DC could spy on you. The "moo" name is just him ridiculing the poor users. However, you found out about his plan, as seen by the way he panicked when he wrote his first post. Right now he is re-developing his spying techniques and is also looking for a way to silence you.